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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_50e97f0f0d6194ea2ca37a564cf4a5a8.html">seq</a></li>  </ul>
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<div class="title">seq/pipeline.h</div>  </div>
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<a href="seq_2pipeline_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#ifndef GRPPI_SEQ_PIPELINE_H</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#define GRPPI_SEQ_PIPELINE_H</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="sequential__execution_8h.html">sequential_execution.h</a>&quot;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &quot;../common/pack_traits.h&quot;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &quot;../common/patterns.h&quot;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacegrppi.html">grppi</a> {</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Input, <span class="keywordtype">int</span> Index, <span class="keyword">typename</span> ... MoreTransformers,</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;          <a class="code" href="namespacegrppi_1_1internal.html#ad87205cdf0538829626a1dc88fca4ccc">internal::requires_index_last</a>&lt;Index,MoreTransformers...&gt; = 0&gt;</div><div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="namespacegrppi.html#a1ad0b5181e41c9753609463c63a093b1">   33</a></span>&#160;<span class="keyword">auto</span> <a class="code" href="namespacegrppi.html#a94f99f5b5ff245645e9fb5fdb9861182">composed_pipeline</a>(Input in, </div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;                       <span class="keyword">const</span> <a class="code" href="classgrppi_1_1pipeline__info.html">pipeline_info</a>&lt;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;                           <a class="code" href="classgrppi_1_1sequential__execution.html">sequential_execution</a>,</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;                           MoreTransformers...&gt; &amp; pipeline_obj)</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;{</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;  <span class="keywordflow">return</span> std::get&lt;Index&gt;(pipeline_obj.stages)(in);</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;}</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Input, <span class="keywordtype">int</span> Index, <span class="keyword">typename</span> ... MoreTransformers,</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;          <a class="code" href="namespacegrppi_1_1internal.html#a8ae839f3ca48e80d464799dae8cf2f00">internal::requires_index_not_last</a>&lt;Index,MoreTransformers...&gt; = 0&gt;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="keyword">auto</span> <a class="code" href="namespacegrppi.html#a94f99f5b5ff245645e9fb5fdb9861182">composed_pipeline</a>(Input in, </div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;                       <span class="keyword">const</span> <a class="code" href="classgrppi_1_1pipeline__info.html">pipeline_info</a>&lt;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;                           <a class="code" href="classgrppi_1_1sequential__execution.html">sequential_execution</a>, </div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;                           MoreTransformers...&gt; &amp; pipeline_obj)</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;{</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="namespacegrppi.html#a94f99f5b5ff245645e9fb5fdb9861182">composed_pipeline</a>&lt;Input, Index+1, MoreTransformers...&gt;(</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;      std::get&lt;Index&gt;(pipeline_obj.stages)(in),</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;      pipeline_obj);</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;}</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">//Last stage</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Item, <span class="keyword">typename</span> Transformer&gt;</div><div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="namespacegrppi.html#a4f9c160369563168490f1b0518573a4e">   55</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(<a class="code" href="classgrppi_1_1sequential__execution.html">sequential_execution</a> &amp;s, Item &amp;&amp; item, </div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;                   Transformer &amp;&amp; transform_op) </div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;{</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;  transform_op(std::forward&lt;Item&gt;(item));</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;}</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment">//Filter stage</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Item, <span class="keyword">typename</span> Filter, <span class="keyword">typename</span>... MoreTransformers&gt;</div><div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="namespacegrppi.html#ab9559a88f3ba8dc6fe319a5993f659bb">   63</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(<a class="code" href="classgrppi_1_1sequential__execution.html">sequential_execution</a> &amp; ex, Item &amp;&amp; item, </div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;                   <span class="keyword">const</span> <a class="code" href="classgrppi_1_1filter__info.html">filter_info&lt;sequential_execution,Filter&gt;</a> &amp; filter_obj, </div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;                   MoreTransformers &amp;&amp; ... more_transform_ops)</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;{</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;  <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(ex, std::forward&lt;Item&gt;(item), </div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;      std::forward&lt;<a class="code" href="classgrppi_1_1filter__info.html">filter_info&lt;sequential_execution,Filter&gt;</a>&gt;(filter_obj), </div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;      std::forward&lt;MoreTransformers&gt;(more_transform_ops)...);</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;}</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Item, <span class="keyword">typename</span> Transformer, <span class="keyword">typename</span>... MoreTransformers&gt;</div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="namespacegrppi.html#ad9c5a29a695ea636eb3b7baf11c4e689">   73</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(<a class="code" href="classgrppi_1_1sequential__execution.html">sequential_execution</a> &amp; ex, Item &amp;&amp; item, </div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;                   <a class="code" href="classgrppi_1_1filter__info.html">filter_info&lt;sequential_execution, Transformer&gt;</a> &amp;&amp; transf_filter, </div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;                   MoreTransformers &amp;&amp; ... more_transform_ops) </div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;{</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;  <span class="keywordflow">if</span>(transf_filter.task(item))</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(ex, std::forward&lt;Item&gt;(item),</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        std::forward&lt;MoreTransformers&gt;(more_transform_ops)...);</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;}</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">//Farm stage</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Item, <span class="keyword">typename</span> Transformer, <span class="keyword">typename</span>... MoreTransformers&gt;</div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="namespacegrppi.html#ab28f2b2ce8b48b496be7b1e4c2ae032f">   84</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(<a class="code" href="classgrppi_1_1sequential__execution.html">sequential_execution</a> &amp; ex, Item &amp;&amp; item, </div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;                   <a class="code" href="classgrppi_1_1farm__info.html">farm_info&lt;sequential_execution, Transformer&gt;</a> &amp; transf_farm, </div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;                   MoreTransformers &amp;&amp; ... more_transform_ops) </div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;{</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;  <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(ex, std::forward&lt;Item&gt;(item), </div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;      std::forward&lt;<a class="code" href="classgrppi_1_1farm__info.html">farm_info&lt;sequential_execution,Transformer&gt;</a>&gt;(transf_farm), </div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;      std::forward&lt;MoreTransformers&gt;(more_transform_ops)... );</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;}</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Item, <span class="keyword">typename</span> Transformer, <span class="keyword">typename</span>... MoreTransformers&gt;</div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="namespacegrppi.html#a71b686aaa5f43c7f83261597cedc06b1">   94</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(<a class="code" href="classgrppi_1_1sequential__execution.html">sequential_execution</a> &amp; ex, Item &amp;&amp; item, </div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;                   <a class="code" href="classgrppi_1_1farm__info.html">farm_info&lt;sequential_execution, Transformer&gt;</a> &amp;&amp; transform_farm, </div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;                   MoreTransformers &amp;&amp; ... more_transform_ops) </div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;{</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;  <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(ex, transform_farm.task(item), </div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;      std::forward&lt;MoreTransformers&gt;(more_transform_ops)...);</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;}</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment">//Intermediate stages</span></div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Item, <span class="keyword">typename</span> Transformer, <span class="keyword">typename</span> ... MoreTransformers&gt;</div><div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="namespacegrppi.html#a04772271c21c3f5fca622645660e9ee9">  106</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(<a class="code" href="classgrppi_1_1sequential__execution.html">sequential_execution</a> &amp; ex, Item &amp;&amp; item, </div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;                   Transformer &amp;&amp; transform_op, </div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;                   MoreTransformers &amp;&amp; ... more_transform_ops) </div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;{</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(ex, transform_op(item), </div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;      std::forward&lt;MoreTransformers&gt;(more_transform_ops)...);</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;}</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Generator, </div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;          <span class="keyword">typename</span> ... Transformers,</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;          <span class="keyword">typename</span> = <span class="keyword">typename</span> std::result_of&lt;Generator()&gt;::type&gt; <span class="comment">// TODO: Intention?</span></div><div class="line"><a name="l00134"></a><span class="lineno"><a class="line" href="group__pipeline__pattern__seq.html#ga4d6dd4332c75659e425ab03d8ddf038c">  134</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__pipeline__pattern__native.html#ga50396cad2879f1facd37757ea3aa564b">pipeline</a>(<a class="code" href="classgrppi_1_1sequential__execution.html">sequential_execution</a> &amp; ex, Generator &amp;&amp; generator_op, </div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;              Transformers &amp;&amp; ... transform_ops) </div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;{</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;  <span class="keywordflow">for</span> (;;) {</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    <span class="keyword">auto</span> item = generator_op();</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="keywordflow">if</span>(!item) <span class="keywordflow">break</span>;</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    <a class="code" href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">pipeline_impl</a>(ex, *item, std::forward&lt;Transformers&gt;(transform_ops) ... );</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;  }</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;}</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;}</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="namespacegrppi_html"><div class="ttname"><a href="namespacegrppi.html">grppi</a></div><div class="ttdef"><b>Definition:</b> callable_traits.h:24</div></div>
<div class="ttc" id="classgrppi_1_1filter__info_html"><div class="ttname"><a href="classgrppi_1_1filter__info.html">grppi::filter_info</a></div><div class="ttdef"><b>Definition:</b> patterns.h:61</div></div>
<div class="ttc" id="classgrppi_1_1pipeline__info_html"><div class="ttname"><a href="classgrppi_1_1pipeline__info.html">grppi::pipeline_info</a></div><div class="ttdef"><b>Definition:</b> patterns.h:29</div></div>
<div class="ttc" id="namespacegrppi_html_aafdd79389d86c8837428498b46a52a11"><div class="ttname"><a href="namespacegrppi.html#aafdd79389d86c8837428498b46a52a11">grppi::pipeline_impl</a></div><div class="ttdeci">void pipeline_impl(parallel_execution_native &amp;ex, InQueue &amp;input_queue, Consumer &amp;&amp;consume)</div><div class="ttdef"><b>Definition:</b> native/pipeline.h:98</div></div>
<div class="ttc" id="namespacegrppi_1_1internal_html_a8ae839f3ca48e80d464799dae8cf2f00"><div class="ttname"><a href="namespacegrppi_1_1internal.html#a8ae839f3ca48e80d464799dae8cf2f00">grppi::internal::requires_index_not_last</a></div><div class="ttdeci">std::enable_if_t&lt;(Index&lt; sizeof...(T)-1), int &gt; requires_index_not_last</div><div class="ttdef"><b>Definition:</b> pack_traits.h:34</div></div>
<div class="ttc" id="group__pipeline__pattern__native_html_ga50396cad2879f1facd37757ea3aa564b"><div class="ttname"><a href="group__pipeline__pattern__native.html#ga50396cad2879f1facd37757ea3aa564b">grppi::pipeline</a></div><div class="ttdeci">void pipeline(parallel_execution_native &amp;ex, Generator &amp;&amp;generate_op, Transformers &amp;&amp;...transform_ops)</div><div class="ttdoc">Invoke Pipeline pattern on a data stream with native parallel execution. </div><div class="ttdef"><b>Definition:</b> native/pipeline.h:500</div></div>
<div class="ttc" id="classgrppi_1_1farm__info_html"><div class="ttname"><a href="classgrppi_1_1farm__info.html">grppi::farm_info</a></div><div class="ttdef"><b>Definition:</b> patterns.h:51</div></div>
<div class="ttc" id="classgrppi_1_1sequential__execution_html"><div class="ttname"><a href="classgrppi_1_1sequential__execution.html">grppi::sequential_execution</a></div><div class="ttdoc">Sequential execution policy. </div><div class="ttdef"><b>Definition:</b> sequential_execution.h:31</div></div>
<div class="ttc" id="namespacegrppi_html_a94f99f5b5ff245645e9fb5fdb9861182"><div class="ttname"><a href="namespacegrppi.html#a94f99f5b5ff245645e9fb5fdb9861182">grppi::composed_pipeline</a></div><div class="ttdeci">void composed_pipeline(InQueue &amp;input_queue, const pipeline_info&lt; parallel_execution_native, MoreTransformers... &gt; &amp;pipe, OutQueue &amp;output_queue, std::vector&lt; std::thread &gt; &amp;tasks)</div><div class="ttdef"><b>Definition:</b> native/pipeline.h:36</div></div>
<div class="ttc" id="namespacegrppi_1_1internal_html_ad87205cdf0538829626a1dc88fca4ccc"><div class="ttname"><a href="namespacegrppi_1_1internal.html#ad87205cdf0538829626a1dc88fca4ccc">grppi::internal::requires_index_last</a></div><div class="ttdeci">std::enable_if_t&lt;(Index==sizeof...(T)-1), int &gt; requires_index_last</div><div class="ttdef"><b>Definition:</b> pack_traits.h:30</div></div>
<div class="ttc" id="sequential__execution_8h_html"><div class="ttname"><a href="sequential__execution_8h.html">sequential_execution.h</a></div></div>
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